Abstract
Shock hardening of metals (e.g. Ti, stainless steel) by pulsed lasers offers the possibilty of large hardening depth (several millimeters) without serious damage to the surface of the workpiece. Previous investigations for shock hardening have mainly been performed with high power solid state lasers. The adaptation of commercial, high power gas discharge lasers to the shock hardening process could make this process relevant for industrial applications, as high repetition rates may be used. Two different laser systems have been investigated: a TEA CO2 laser and a XeCl laser. Both systems have pulse energies of some Joule, a pulse length of several ten nanoseconds, and pulse repetition rates of up to 10 Hertz. The divergence of the beam was minimized to improve focusing properties. Systematic measurements of the laser induced pressure by means of piezo probes have been performed. An enhancement of the hardness of illuminated Ti(RT15) targets has been found and will be reported.
| Original language | English |
|---|---|
| Pages (from-to) | 64-73 |
| Number of pages | 10 |
| Journal | Proceedings of SPIE - The International Society for Optical Engineering |
| Volume | 2788 |
| DOIs | |
| State | Published - 26 Aug 1996 |
| Externally published | Yes |
| Event | High-Power Lasers: Gas and Solid State Lasers 1996 - Besancon, France Duration: 10 Jun 1996 → 14 Jun 1996 |
Keywords
- CO laser
- Pressure measurement
- Shock hardening
- XeCl laser
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